Synthesis and structural studies of diamagnetic first-row transition metal complexes with the rigid nitrogen ligand:: bis[N-(2,6-diisopropylphenyl)imino]acenaphthene

Reported are the syntheses and characterization of diamagnetic copper(I) and iron(II) complexes with the bidentate nitrogen ligand bis[N-(2,6-diisopropylphenyl)imino]acenaphthene (o,o'-iPr(2)C(6)H(3)-BIAN). Namely, they are [Cu(o,o'-iPr(2)C(6)H(3)-BIAN)(2)](ClO4)(AcOH) (1), and [Fe(biPY)(2)(o,o'-iPr(2)C(6)H(3)-BIAN)](ClO4)(2) (2), where bipy = 2,2'-bipyridine, AcOH = acetic acid. Moreover, the crystal structure of the novel dimeric Cu(I) compound with the p-brominated derivative of the o,o'-iPr(2)C(6)H(3)-BIAN ligand, is also discussed. In [CuBr(o,o'-iPr(2)-p-BrC6H2-BIAN)](2) (3), the respective Cu(I) ion is in four-coordinate environment tetrahedrally surrounded by two imine nitrogen atoms of o,o'-iPr(2)-p-BrC6H2-BIAN, and by two bridging bromide atoms. (C) 2002 Elsevier Science B.V. All rights reserved.